2 Answers
2

Right click the toolbar and from one of the 'Toolbar' submenu, make sure 'iTunes' is selected. You also have to go into iTunes > Preferences > Advanced and make sure "Minimize iTunes to System Tray" is unselected, and maybe even "Show iTunes icon in System Tray" is unselected as well.

If you are wanting the toolbar effect, instead of the system tray, you have to right click on your task bar, select "Toolbars", and then select "iTunes". This, and the system tray option, both work on 64bit Windows Vista.